Solve -s - 15 = -4*k, 45 = 5*k - 11*s + 15*s for k.

5

Solve 2*r = 5*w - 12, -8 + 2 = 2*r - 2*w for r.

-1

Solve 2*n - 4 = -4*w, -w = -4*n + 3 + 14 for w.

-1

Solve 2*y + 20 = -4*n, -5*n - 12 = 18 for y.

2

Solve 0 = -d - 3*i, -2*d + 30*i - 29*i + 7 = 0 for d.

3

Solve -33*a = -28*a - 5*j - 5, 4*a - 2*j = 0 for a.

-1

Solve h - 4*t + 20 = -3*h, 2*h = -5*t + 4 for h.

-3

Solve 3*s - u = 7*s + 2, -5*u = 10 for s.

0

Solve 60*x = 55*x + f - 17, -2*f - 26 = 5*x for x.

-4

Solve 49*p - 2*b + 4 = 47*p, -2*p + 4 = 2*b for p.

0